text: from ject import oneself
  from texting import ELLIP
  
  from xbrief.margin import VectorMargin
  
  
  def margin_set(vec, head, tail, read, hr=ELLIP):
      vn = VectorMargin.build(vec, head, tail)
      return (
          vn.map(oneself).to_list(hr),
          vn.stringify(read).to_list(hr)
      )
  